The half-life of decomposition of gaseous $CH_3CHO$ at initial pressure of $364\, mm$ and $182\, mm$ of $Hg$ were $440\, sec$ and $880\, sec$ respectively. The order of the reaction is

  • A

    $2$

  • B

    $1$

  • C

    $0$

  • D

    $1.5$

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If doubling the concentration of a reactant $ 'A'$  increases the rate $4$ times and tripling the concentration of $'A' $ increases the rate $9$  times, the rate is proportional to

  • [AIIMS 1991]

Which of the following is correct

For a certain reaction : $(A)(g)  \to  B(g)$ Half life for different initial pressures of $A$  is given below

 $\begin{array}{|l|l|l|} \hline {P_{{A_0}}}(atm) & 0.1 & 0.025 \\ \hline {t_{1/2}}(\sec\,\,) & 100 & 50 \\ \hline \end{array}$

The correct statement about order of reaction is